Honda Accord 2008 Manual page 537

07/11/02 09:11:01 61TA0000_110_0218
PGM-FI System
DLC Circuit Troubleshooting (cont'd)
64. Check for continuity between PGM-FI main relay 1
4P connector terminal No. 3 and ECM/PCM
connector terminal A7.
＊２１
Is there continuity?
YES
the relay is OK, update the ECM/PCM if it does not
have the latest software (see page 11-231), or
substitute a known-good ECM/PCM (see page 11-7),
then recheck. If the symptom/indication goes away
with a known-good ECM/PCM, replace the original
ECM/PCM (see page 11-232).
NO −
PCM (A7) and PGM-FI main relay 1.
11-218
PGM-FI MAIN RELAY 1 4P CONNECTOR
MRLY
Terminal side of
female terminals
ECM/PCM
MRLY (RED/BLK)
CONNECTOR A (49P)
Terminal side of female terminals
− Test PGM-FI main relay 1 (see page 22-91). If
Repair open in the wire between the ECM/
65. Turn the ignition switch to LOCK (0).
66. Remove PGM-FI main relay 1 (A) from the under-
hood fuse/relay box.
A
67. Measure voltage between PGM-FI main relay 1 4P
connector terminal No. 1 and body ground.
PGM-FI MAIN RELAY 1 4P CONNECTOR
＋
B
Terminal side of female terminals
Is there battery voltage?
−
YES Go to step 68.
NO − Replace the under-hood fuse/relay box
(see page 22-83).
＊２２
＊２３